<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_1_1434461104225_92057" dir="ltr" class="" style="">Not an exact fit for this conversation, but I think it fits well.</div><div id="yui_3_16_0_1_1434461104225_92057" dir="ltr" class="" style=""><br></div><div id="yui_3_16_0_1_1434461104225_92057" dir="ltr" class="" style="">I am pretty sure I have listed this first H-Bridge circuit before,which is what I use. Also you can replace the BJT's with MOSFETS and change resistor values. Adding pull-down resistors to the opto-isolators led side would be an added floating pin protection. </div><div id="yui_3_16_0_1_1434461104225_92057" dir="ltr" class="" style=""><br class="" style=""></div><div id="yui_3_16_0_1_1434461104225_92057" dir="ltr" class="" style=""><span id="yui_3_16_0_1_1434461104225_92056" class="" style=""><a href="http://www.mcmanis.com/chuck/robotics/tutorial/h-bridge/bjt-circuit.html" id="yui_3_16_0_1_1434461104225_92055" class="" style="">http://www.mcmanis.com/chuck/robotics/tutorial/h-bridge/bjt-circuit.html</a><br class="" style=""></span></div><div class="" id="yui_3_16_0_1_1434461104225_92073" style=""><span class="" style=""><br class="" style=""></span></div><div class="" id="yui_3_16_0_1_1434461104225_92073" style=""><span class="" id="yui_3_16_0_1_1434461104225_92376" style="">This site I recently found and I just like all the options it provides</span></div><div class="" id="yui_3_16_0_1_1434461104225_92073" style=""><span class="" style=""><br class="" style=""></span></div><div class="" id="yui_3_16_0_1_1434461104225_92073" dir="ltr" style=""><span class="" id="yui_3_16_0_1_1434461104225_92084" style=""><a href="http://www.talkingelectronics.com/projects/H-Bridge/H-Bridge-1.html" id="yui_3_16_0_1_1434461104225_92083" class="" style="">H-Bridge</a><br class="" style=""></span></div><div id="yui_3_16_0_1_1434461104225_100846" class="" style=""></div><div id="enhancrCard_0" class="link-enhancr-attachment link-enhancr-element " style="width: 450px; 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vertical-align: middle;" id="yui_3_16_0_1_1434461104225_101280"><div class="" style="line-height: 16.5px; height: 135px; width: 245px;" id="yui_3_16_0_1_1434461104225_101279"><div class="" style="word-wrap: break-word; word-break: break-all;"><span class="" style=""></span><span class="" style=""></span><a href="http://www.talkingelectronics.com/projects/H-Bridge/H-Bridge-1.html" class="" style="line-height: 18px; font-size: 18px; display: block; color: rgb(0, 0, 0) !important;"><span class="" style="margin: 0px 0px 3px; line-height: 21px; max-height: 43px; display: inline-block; overflow: hidden !important;">H-Bridge</span></a><div class="" style="font-size: 13px; line-height: 20px; color: rgb(153, 153, 153); max-height: 81px; overflow: hidden;">THE H-BRIDGE Home The H-Bridge is designed to drive a motor clockwise and anticlockwise.</div></div></div></td></tr><tr class="" style="" id="yui_3_16_0_1_1434461104225_101284"><td colspan="2" class="" style="height: 4px; font-size: 0pt; border-collapse: collapse;" id="yui_3_16_0_1_1434461104225_101283"><div class="" style="height: 4px; 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